I got it from my vet. There's two bottles of the same product - one with birds on it & one with a yellow label.
What my vet said - it was originally developed to help birds when molting. Shortly later, the distributed & vets recognized it has similar benefits for other animals - aiding dry skin & fur loss. It was rebranded into the yellow bottle but the two products are the same. He suggests it for many of the animals he sees with really dry skin.
As I said, I've already seen some improvements in Sylvie's skin & she loves the taste. Be warned though, it's a yellow oil that I'm pretty sure stains - I've gotten some on my jeans so we shall see.